What is this test?
The fecal occult blood test checks for blood in the stool that is not visible to the naked eye. It is a simple test used in colorectal (colon) cancer screening and in the investigation of gastrointestinal bleeding; regular screening is recommended for people over 50.
When is it requested?
Erythrocytes in stool
What does a positive fecal occult blood result mean?
A positive result means there is bleeding somewhere in the digestive tract; it is often due to simple causes, but the source should be investigated with a colonoscopy.
- Hemorrhoids or an anal fissure
- Menstrual blood mixing with the sample
- Stomach or bowel irritation from aspirin and other painkillers
- Colon polyps
- Ulcers or inflammatory bowel disease (e.g., ulcerative colitis)
- Colorectal cancer
What does a negative fecal occult blood result mean?
A negative result means no hidden blood was found; because polyps and tumors may bleed intermittently, it does not completely rule out disease.
- No bleeding in the digestive tract
- Blood from the upper digestive tract is broken down (immunochemical tests target the lower bowel)
- A polyp or tumor not bleeding at the time of the test
- Improper sample collection or late delivery
My result is outside the reference range. What should I do?
Do not collect the sample during your period or while hemorrhoids are bleeding; after a positive result your doctor will recommend a colonoscopy, and a negative test is repeated at recommended screening intervals. See a doctor about symptoms like rectal bleeding regardless of the result.
Reference ranges depend on the method, age and sex; always use the range printed on your report. This information is for general guidance only; consult your doctor for diagnosis and treatment.
Sample information
- Sample type: Stool
- Tube / container: Stool container
Preparation
Stool (Store and send refrigerated.)
Testing and results
- Method: Immunochromatographic
- Run schedule: Daily
- Turnaround time: Same day, 18:00
Price and appointment
Add the test to your list to receive a price quote by e-mail, or call +90 850 640 07 30 / message us on WhatsApp (+90 537 301 22 14). You can have the test done at our branches or with our home blood collection service. Results can be viewed online with your Turkish ID number (or passport number for foreign nationals).